For The Most Demanding Applications The J457 Series of Automatic Refractometers TECHNICAL BULLETIN 930 Rudolph Research Analytical serving it’s customers with integrity, Quality, and Innovation for over 50 years. The J457 comes in three configurations to match your operating conditions Load and Go Simplicity. The Rudolph J457 can be configured with a Load and Go Measurement feature for your routine measurements tasks. Measuring Insulation methods and the highly J457’s capable Ring features are still in use however for the operator all that is needed to initiate a Heating and measurement is to drop on a sample. Cooling Peltier You do not even need to press start! Technology Mating Insulating Ring to Create Exclusive Dual Temperature Mini Environment Control System All J457 models come with Rudolph’s exclusive Dual Temperature Control System utilizing Peltier Technology. The J457 heats and cools the sample from both prism surface and the sample cover. The insulating cover housing seals against the Prism Well Ring to create a uniform temperature environment providing unmatched 1. J457-SC Standard Configuration temperature control uniformity. J457-SC Standard Configuration is Rudolph’s most popular configuration and provides an excellent combination of a small footprint and a large, easy-to-navigate touchscreen interface. 2. J457-WC Wall Mount Configuration 3. J457-FC Factory Configuration J457-WC Wall Mount Configuration J457-FC Factory Configuration is recommended when there is designed for production environments is a lot of sample spillage on the laboratory’s instrumentation. where water is used for cleaning or Factories working with sticky resins and syrups that end up being there is a lot of sample spillage on the spilled on the instrumentation are great candidates for the J457-FC work surface. This configuration is also as the measurement unit can be as much as six feet away from the excellent for situations where there is very display unit. little work space available: out on the factory floor or in an over crowded satellite laboratory where there is little to no remaining bench space. Rudolph Research Analytical 55 Newburgh Road, Hackettstown, NJ 07840 USA • Phone: 973-584-1558 • Fax: 973-584-5440 • E-mail: info@rudolphresearch.com • Internet: www.rudolphresearch.com The J457 Smart Measure™ advantage Measurement problem: Smart Measure™ solution: > Sample residue is left on prism surface > Automated clean prism monitoring Experience has shown that incorrect Smart Measure™ knows when the prism is clean. measurements are often linked to cross If the prism surface does not produce the correct contamination caused by the previous “Clean Prism” result then Smart Measure™ notifies sample being inadvertently mixed the operator that further cleaning of the prism is with the current sample being necessary. Smart Measure™ notifies the operator measured. Ensuring that the prism is properly cleaned between that it is ready to measure after the prism is measurements can be difficult for busy satisfactorily cleaned. environments where multiple operators are involved. Measurement problem: Smart Measure™ solution: > An insufficient amount of sample covering prism surface > Automated sample load monitoring A small drop of sample in the center Smart Measure™ knows when a sample has been of the prism will measure correctly. loaded on the prism and immediately begins evaluating A large drop of sample completely various metrics surrounding the sample load. If Smart covering the prism surface will measure Measure™ determines that those metrics indicate correctly. A small drop on the proper sample loading, it will display the result with a perimeter of the prism will produce sample quality number. If Smart Measure™ determines erroneous results. that the metrics indicate an improper sample load, Smart Measure™ will ask the operator to clean the prism and re-load the sample. Measurement problem: Smart Measure™ solution: > Sample contamination or improper calibration > Automated sample and calibration inspection An improperly cleaned prism, Smart Measure™ is constantly measuring the prism where sample residue is left in the surface and monitoring the value measured against measurement well, can mix with a its data base of results. If during a water zero the water zero or calibration fluid. This instrument detects a value that is too different type of contamination during the from the data base or the RI value being input calibration process will cause an error is far from the measured value, it will alert across all subsequent measurements. the operator. Measurement problem: Smart Measure™ solution: > The sample has air bubbles > Scanning technology reduces that affect measurement results erroneous results from being displayed Many samples have air trapped inside Smart Measure™ catches these flyers by scanning them or are carbonated. These samples the detector for varying RI values and then alerts read well most of the time as long as the user to reload the sample. Since the user does air bubbles are not trapped between not get a value to record until a new sample load the prism surface and the sample. is completed, Smart Measure™ greatly reduces When this happens the operator gets erroneous measurements from being recorded. an erroneous result often referred to as a flyer. These results are called flyers because the measured value is quite different from the expected measurment value. Rudolph Research Analytical 55 Newburgh Road, Hackettstown, NJ 07840 USA • Phone: 973-584-1558 • Fax: 973-584-5440 • E-mail: info@rudolphresearch.com • Internet: www.rudolphresearch.com Sample Delivery Options Rudolph Research offers many options to deliver samples to the J457 including, AutoFlex R837 Auto Sampler, Peristaltic Pump, Vertical KVP for samples with suspended solids, and the DP Cover. These options offer the ability to use the refractometer horizontally or vertically, with samples introduced manually, with a syringe, or pumped for higher throughput labs. J457 Specifications Refractometer Specifications J457 (All models) Optical wavelength: 589.3nm (NaD line) Measurement scales: Refractive Index (nD), Brix (% Sucrose), and up to 100 custom programmed scales Response time: User configurable, generally less than Measurement range: Refractive Index 1.26 – 1.72 30 seconds Brix 0 – 100 Calibration: Using water or NIST traceable fluids. Accuracy: Refractive Index ±0.00002 Factory default calibration can always Brix 0.015 be reset. Reproducibility: Refractive Index ±0.00002 Prism: Artificial sapphire Brix 0.015 Acid resistance: Hastelloy™ measurement surface (optional) Resolution: Refractive Index 0.00001, Brix 0.01 Data storage/ Temperature internal memory: 32 GB Non-removable Compact Flash control range: 10°C to 110°C (wider temperature Display: Adjustable 10.4 inch diagonal, 800-600 range available dependent on ambient pixels, color, Flat Panel Monitor with conditions and options) Temperature Resistant Touch Screen Interface, 400 nits control by dual Peltier system; boost brightness, gasketted for spill protection option to 120°C available User interface: Touchscreen Temperature control reproducibility: ±0.01°C Communication interface: 3 USB, RS232 and Cat5 Network Ambient (Ethernet) temperature limit: 5°C to 40°C Operating Temperature dimensions/weight: L: 17 1/4” W: 12” H: 13” / 23 lbs. correction range: 4°C to 95°C (for sucrose solutions) L: 43.5cm W: 30.5cm H: 33cm / 10.4 kg Sample temperature Power requirements: 100 - 240 volts, 50 Hz - 60 Hz limit: -20°C to 250°C J457 Configuration Options All models have Rudolph’s exclusive Dual Temperature Control System with Mini Sample Environment J457-SC J457-FC J457-WC • Completely integrated single • Splash proof measurement unit • Splash proof measurement unit unit design • Display unit with independent bench • Display unit with wall mount option top option • Distance measurement unit can be • Distance measurement unit can be from display unit: 3 ft. or 6 ft. from display unit: 3 ft. or 6 ft. Rudolph Research Analytical 55 Newburgh Road, Hackettstown, NJ 07840 USA • Phone: 973-584-1558 • Fax: 973-584-5440 • E-mail: info@rudolphresearch.com • Internet: www.rudolphresearch.com 4/20 12-RRA-204